if you have the sight tools to put on night sights ,for a inexpericened person, how hard is this to do,and what would be the cost for just the tools,ihave several friends who own glocks that i could put sights on their guns too?

You can get the tools for Glock sights for about $125.00 or less. Caution, you really do need to read the instructions on some of these sights before you buy them. And, when you put them on for a friend, for a fee, that's business. Some Tritium sights break easily(aargGHH, gee how much did they cost ?).It's not rocket science but, drink the beer afterwards.

I have installed aftermarket sights on all three of my Glocks with no problems at all. Most decent sights come with the tool needed for the front sight and a simple brass hammer, delrin punch, and fine file will let you take care of the rear. Just remember on Glock rear sights, remove them left to right, install them right to left.

"I have always been a soldier. I have known no other life. The calling of arms, I have followed from boyhood. I have never sought another." From The Virtues of War, by Steven Pressfield.